Valve-lifter



T. OTSUKA.

VALVE LIFTER.

APPLICATION FILED mam-1,1919.

1,384,969. Patented July '19, 1921 2 SHEETSSHEET I.

Teruyos/zl Otsu ka.

T. OTSUKA.

VALVE LIFTER.

APPLICATION FILED 020.1, ms.

1,384,969, Patented July 19, 1921.

2 SHEETSSHEET 2- Ter'uyoshi Otsvka.

@ www TERUYOSHI UTSUKA, OF OAKLAND, CALIFORNIA.

VALVE-LIFTER.

menses.

Application filed December 1., 1919.

T (ZZZ whom it may COVLCGTW.

13o it known that I, Tnnnyosni Greene, a subject of the Emperor of Japanresiding at Oakland, in the county of Alameda and State of California,have invented certain new and useful Impro' ."ements in Valveliifters,of which the following is a specilication.

My invention is an improved valve lifter which is compact, and eilicientin operation.

Referring to the annexed drawing.

Figure 1 is a side view of my valve lifter in the act of lifting avalve.

1 ig. 2 is an enlarged end view of my valve lifter.

Fig. is an enlarged side elevation of valve lifter.

Fig. 4c is a plan view of my valve lifter.

Fig. 5 is a side view of a modified form of my valve lifter applied to avalve to lift it.

Fig. 6 is an enlarged front-elevation of my modified valve lifter.

Fig. 7 is an enlarged side elevation of my modified valve lifter.

Fig. 8 is an enlarged plan of my modified valve lifter.

In the drawing 1 indicates a frame. On one end of said frame arebearings 2 and 3 in which is journaled a shaft 1 extending transverselyof the frame. A. shaft 5 extending longitudinally of the frame isjournaled in a bearing 6 and at the other end of said frame in a bearing7 in transverse frame member 8. A beveled pinion f) is secured on shaft-4 between bearings 2 and 3 and prevents longitudinally movement of saidshaft in said bearings. A beveled pinion 10 is secured on the inner endof shaft 5 and meshes with pinion 9. On the shaft 1 beyond the bearing 2is a left hand thread 11 and on said shaft beyond bearing 3 is arighthand thread 12. On the thread 11 screws a jaw 13 of a pair of jaws 13and 141:, the jaw 141 being pivoted by pivots 15 to jaw 13. On thethread 12 screws a jaw 16 of a pair of jaws 16 and 17, the 17 beingpivoted to jaw 16 by pivot 18. ()n the inner edge of all of said jawsare inturned lugs 19. On the outer end of shaft is secured a crank 20formed in two sections 21 and 22 hinged together by hinge 23 so that thesection 22 may fold upon section 21 or straight out therefrom. A spring25 normally holds the jaws 13 and 14., and 16 and. 1? closed.

Specification of Letters Patent.

Patented July 111., 1921.

Serial No. 341,744.

The operation of my invention is as follows:

The jaws 1 3 and 14; and 16 and 17 are slipped over the valve stem 25between the head of the cylinder and the top of the spr ng 26 andbetween the lower end of the spring and the valve collar 27respectively, the lugs 19 engaging the inside of the spring ad holdingthe jaws closed. The shaft 5 and screw 4 through the medium of beveledgears 10 and 9 are then rotated by means of crank 20, which causes thejaws 13 and 14 and the jaws 16 and 1'? to move toward each other andcompress the valve spring 26. The cotterpin 28 is then removed from thevalve stem. The valve is then lifted and the spring removed and heldbetween the aws 13 and 14 and the jaws 16 and 17 until the valve isagain ready to be seated.

To seat the valve the spring 26 held between said aws is placed inposition under the valve seat. The valve stem is inserted through thespring and seated. The collar 27 is slipped on the end of the valve stemand the pin 28 inserted through the lower end of the valve stem. Thecrank 20 is then turned backward and the jaws 13 and 1 1 and the jaws 16and 17 are moved apart. The jaws are then withdrawn from the spring andvalve stem leaving the valve in posi- 5 is shown an engine of the closedpc. the valves being closed by the usual wall 30 which is pmvidcd withan opening 31 the upper edge of which opening somewhat below the top ofthe spring In tl e form of my invention shown in 5 to S the ass 13 and14 are bent upwardly at 32 so that they may be projected through theopening 31 to grip the top of the spring 26 above the upper edge of saidopening.

The jaws of said form of my invention have vertical flanges 35 andhorizontal flanges 36 extending inwardly from said vertical flangesmidway between the lower and upper edges thereof, so that the coils ofthe spring 26 may be gripped between the vertical flanges above or belowsaid horizontal flanges in accordance with the position of the coil.Screws 37 are respectively connected at one end to jaws 13 and 16 andextend through eyes 38 respectively in jaws .1 1 and 17.

Thumb nuts 39 on said Screws bear against the jaws 14 and 17 whereby thejaws are drawn toward each other to grip the valve spring.

Having described my invention I claim:

1. A valve lifter including a frame, a shaft j ournaled in said frame, aright thread and a left threadon said shaft, two pairs of jaws, one jawof each pair engaging a thread on said shaft,-the other jaws being eachpivoted to one of said thread engaging jaws, and means for rotating saidscrew.

2. A valve lifter including a frame, bearings on said frame, a shaftjournaled in said bearings, a beveled gear secured on said shaft betweensaid bearings, a right thread and a left thread on said shaft, a pair ofjaws actuated by each of said threads, a second shaft, a bevel gearsecured to the sec ond shaft and meshing with the beveled gear on saidfirst shaft, and a crank 011 the other end of said second shaft.

3. A valx e lifter including a, frame, a shaft j ournaled in said frame,a right thread and a left thread'on said shaft, a pair of jaws actuatedby each of said threads, the upper jaws being bent upwardly to enablethem to project through the valve closure opening and grip the top ofthe valve spring above the upper edge of said openings, and means forrotating said screw.

4;. A valve lifter including a frame, a shaft j ournaled in said frame,a right thread and a left thread on said shaft, a pair of jaws actuatedby each of said threads, said jaws being formed with vertical flangesand with inturned horizontal flanges extending from said verticalflanges intermediate the upper and lower edges thereof, and means forrotating said shaft.

5. A valve lifter including a frame, a shaft journaled in said frame, aright thread and a left thread on said shaft, a pair of jaws actuated byeach of said threads, the

upper jaws being bent upwardly to enable them to project through thevalve closure opening and grip the top of the valve spring above theupper edge of said openings, a screw connected to one j aw of each pairand standing through the other jaw of each pair, a thumb nut on eachscrew engaging said other jaw for holding the aws in gripping position.a

In testimony whereof I aliix my signature.

TERUYOSHI O T'SUKA.

